Stock head gasket limits. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

S@nt0s · 06-08-2012, 01:35 PM

your roughly where i would keep it. ive seen complete stock motors on C16 make 460 and with E85 running cooler it will help but your around the range where its a flip of the coin. I lifted my head with a T76@28psi wit ARp's but now on a 6266@33psi and zero lift. it seen 35-40psi spikes too and all checked out. i wouldnt go any leaner and timing same thing. im on forged pistons and i have more timing but i wouldnt push the stockers any more then that

06-08-2012, 01:35 PM	#8
S@nt0s Zilvia Addict Join Date: Jan 2008 Location: 310 all day! Age: 44 Posts: 912 Trader Rating: (4) Feedback Score: 4 reviews	your roughly where i would keep it. ive seen complete stock motors on C16 make 460 and with E85 running cooler it will help but your around the range where its a flip of the coin. I lifted my head with a T76@28psi wit ARp's but now on a 6266@33psi and zero lift. it seen 35-40psi spikes too and all checked out. i wouldnt go any leaner and timing same thing. im on forged pistons and i have more timing but i wouldnt push the stockers any more then that __________________ MunkyW3rkz Racing